uses .txt for shared content (#40416) (#40538)

(cherry picked from commit 69eef14e3b)

docs/docsite/rst/network/user_guide/platform_eos.rst

@@ -130,4 +130,4 @@ In this example two variables defined in ``group_vars`` get passed to the module
 - the ``proxy_env`` variable gets passed to the ``environment`` option of the module
 
 
-.. include:: shared_snippets/SSH_warning.rst
+.. include:: shared_snippets/SSH_warning.txt

docs/docsite/rst/network/user_guide/platform_ios.rst

@@ -67,4 +67,4 @@ Example CLI Task
      register: backup_ios_location
      when: ansible_network_os == 'ios'
 
-.. include:: shared_snippets/SSH_warning.rst
+.. include:: shared_snippets/SSH_warning.txt

docs/docsite/rst/network/user_guide/platform_junos.rst

@@ -112,4 +112,4 @@ Example NETCONF Task
      when: ansible_network_os == 'junos'
 
 
-.. include:: shared_snippets/SSH_warning.rst
+.. include:: shared_snippets/SSH_warning.txt

docs/docsite/rst/network/user_guide/platform_nxos.rst

@@ -126,4 +126,4 @@ In this example two variables defined in ``group_vars`` get passed to the module
 - the ``proxy_env`` variable gets passed to the ``environment`` option of the module
 
 
-.. include:: shared_snippets/SSH_warning.rst
+.. include:: shared_snippets/SSH_warning.txt

docs/docsite/rst/network/user_guide/shared_snippets/SSH_warning.txt

@@ -1,4 +1,2 @@
-:orphan:
-
 .. warning:: 
    Never store passwords in plain text. We recommend using SSH keys to authenticate SSH connections. Ansible supports ssh-agent to manage your SSH keys. If you must use passwords to authenticate SSH connections, we recommend encrypting them with :ref:`Ansible Vault <playbooks_vault>`.